The enthalpy change for the exothermic reaction N2 + 3H2(g) à 2NH3(g) is 92.2kJ. molar enthalpy for the formation of ammonia is: (K:1) Select one: O 46.6 kJ O 92.2 kJ/mol cannot be determined -46.1 kJ/mol -92.2 kJ

Q: When a 8.00 g sample of KCI is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given : Mass of KCl dissolved = 8 g Total heat capacity of calorimeter = 6.15 KJ/K And change in…

Q: The standard enthalpy change for the following reaction is -3.35×103 kJ at 298 K. 4 Al(s) + 3…

A: We are given the reaction - 4 Al(s) + 3 O2(g)  →   2 Al2O3(s) We proceed as follows,for finding out…

Q: When 13.8 mL of 0.870 M lead(I) nitrate reacts with 90.0 mL of 0.777 M sodium chloride, 0.579 kJ of…

A: Number of moles = Molarity x Volume (L)

Q: Which of the following is a statement of Hess's law? O The AH of a reaction depends on the physical…

A: Hess's Law - If a reaction is carried out in multiple steps then the change in enthalpy of reaction…

Q: CaCO3(s) → CaO(s) + CO,(g) is 178.1 kJ. From the 15. The standard enthalpy change for the reactionn…

A:

Q: Elemental iron is used in heat packs and the reaction can be represented as: 4 Fe(s) +3 O2(g) → 2…

A: When enthalpy is negative that means reaction is exothermic reaction

Q: The A H value for the reaction k0,(g) + Hg(1) → HgO(s) is -90.8 kJ. How much heat is released when…

A:

Q: he value of ΔH0for the reaction is -126 kJ. Determine the heat released when 2.00 mol of NaOH is…

A: For a chemical reaction, the enthalpy of reaction (ΔHrxn) is the difference in enthalpy between…

Q: The value of AH° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the…

A: 2 CO (g) + O2 (g) →2 CO2 (g) The enthalpy of reaction ∆H° = - 482 KJ   From the above given…

Q: Determine

A: We will calculate ∆H rxn by doing operation in giving equation

Q: 3.88 g of solid ammonium nitrate dissolves in 60.0 g of distilled water in a coffee-cup calorimeter.…

A: Given that:  Mass of ammonium nitrate given = 3.88g Mass of water = 60.0grams Initial temperature of…

Q: Using the provided table, determine the enthalpy for the reaction C's) + CO, (g) -2 CО (9) Substance…

A:

Q: The value of ΔH° for the reaction below is -336 kJ.  Calculate the heat (kJ) released to the…

A:

Q: The ΔrH for the oxidation of solid sulfur to SO3 is -396  kJmol−1 and for the oxidation of SO2 to…

A: To solve this problem we will use the given enthalpy of formation to calculate the enthalpy of…

Q: 22. Write a reaction that corresponds to the Suppose a 50.0 g block of silver (specific heat =…

A: The question is based on the law of conservation of energy. whatever heat lost by hot silver metal…

Q: Consider the reaction. 2 Fe,0, 4 Fe +302 AHixn +824.2 kJ The formation of 58.0 g of Fe results in

A: As per the balanced reaction- Generation of 4 mol Fe requires 824.2 kJ energy. So, Energy absorbed =…

Q: The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 302(g) → 2 Fe,O3 (s)…

A: • Given,           4fe(s)+3O2(g)→2 fe2O3(s), ∆H=-1652 kJ• from the above equation we conclude Heat:-…

Q: The value of ΔH0 for the reaction below is -186 kJ.  Determine the heat released from the reaction…

A: Standard enthalpy change of reaction is defined as the amount of heat released or produced in the…

Q: Heat transfer in a reaction is 8740 J. Write the correct value (with correct sign) for q if heat is…

A: Given The heat transfer in the reaction = 8740 J

Q: The thermite reaction produces a prodigious amount of heat energy. Given the thermochemical reaction…

A: Reaction equation :8Al(s) + 3Fe3O4(s) →              4Al2O3(s) + 9Fe(s)∆H°rxn = -3350.0 kJmolMass of…

Q: The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 302(g) → 2 Fe,O,(s)…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three subparts…

Q: Using the provided table, determine the enthalpy (in kJ/mol) for the reaction C(s) + CO2 (g)→ 2 CO…

A:

Q: - Hydrogen gas and oxygen gas release 482.6 kJ of heat when they combine to form steam. Is this…

A: Given :  H2 + O2 ---> H2O  Amount of heat released = 482.6 kJ  To determine :-  Whether the…

Q: The value of AH° for the reaction below is -126 kJ. The amount of heat that is released by the…

A: Given reaction is : 2Na2O2 (s) + 2H2O (l) → 4NaOH (s) + O2 (g) Standard change in enthalpy of the…

Q: For the reaction at constant pressure?: 2 Mg(s) + 02(g) → 2 Mg0(s) AH = - 1204 kJ How many…

A: Given: 2Mg(s)+O2(g)→2MgO(s)    ∆H=-1204kJ To find: kilojoules of heat are released when 40.3g  of…

Q: Calculate ∆Gº for the reaction, C3H8(g)+5O2(g)→3CO2(g)+4H2O(g), where ∆Gfº=-23.5 kJ/mol for C3H8(g),…

A: Gibbs free energy is the energy which is utilised to do uswful work. It is an extensive property…

Q: 11) When potassium chloride reacts with oxygen under the right conditions, potassium chlorate is…

A: Since you are posted with multiple questions. As per the rule I am answering first question only.…

Q: The value of AH for the reaction below is -482 kJ. Calculate the heat (kJ) released when 52.0 g of…

A: We can calculate the heat released by using stoichiometric calculation. We see from balanced…

Q: The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 302(9) → 2 Fe, O,(s)…

A: Using  basic thermochemistry concept we can solve

Q: The value of AH° for the reaction below is -126 kJ. The amount of heat that is released by the…

A: Balanced equation:2 Na2O2 + 2 H2O ===> 4 NaOH + O2 Reaction type: double replacement.

Q: The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 302 (9) + 2 Fe, 0,(s)…

A:

Q: The value of ΔH° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the…

A:

Q: When a 4.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity…

A: First, we will calculate the enthalpy change and then convert that heat into a molar quantity. To…

Q: Calculate the enthalpy (ΔHo) of reaction (kJ) for the equation as written. If the answer is…

A: Given:

Q: The value of ΔH° for the reaction below is -72 kJ. Therefore, ________ kJ of heat are released when…

A: ΔH° < 0 => heat is releasing in the reaction. Since when 2 mol of HBr is forming, -72 KJ =…

Q: OAttempt 1 Calculate the standard enthalpy change for the reaction at 25 C. Standard enthalpy of…

A:

Q: 0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's…

A:

Q: 12) Calcium carbonate decomposes at high temperature to form carbon dioxide and calcium oxide: Caco3…

A: To find the heat of the reaction for the below reaction. CaCO3 → CO2 + CaO Given that:

Q: When 13.8 mL of 0.870 M lead(II) nitrate reacts with 90.0 mL of 0.777 M sodium chloride, 0.279 kJ of…

A: Answer - The correct option is - (c) 23.3 kJ

Q: When 4.04 g of solid NH4NO3 dissolves in 50.0 g of water at 26.0°C in a calorimeter, the temperature…

A: Given that: Weight of NH4NO3 = 4.04 g  Heat (q) = 1.29 kj  Molar mass of NH4NO3 = 80 g/mole Enthalpy…

Q: The value of AH for the reaction below is -126 kJ. The amount of heat that is released by the…

A: The reaction given is  The value of ΔH of the reaction = -126 KJ. And mass of Na2O2 reacting = 25.0…

Q: The value of ΔHo for the following reaction is -72 kJ. How many kJ of heat will be evolved when 4.0…

A:

Q: The standard enthalpy change for the following reaction is -224 kJ at 298 K. Hg(l) + Cl2(g) ->…

A:

Q: The value of AH° for the reaction below is -126 kJ. The amount of heat that is released by the…

A: Given reaction is : 2Na2O2 (s) + 2H2O(l) ---> 4NaOH(s) + O2(g)

Q: Given the data in the table below, AH°rxn for the reaction 2Ag25 (s) + 02 (g) - 2A820 (s) 25 (s) kJ.…

A: The reaction given is 2 Ag2S (s) + O2 (g) -------> 2 Ag2O (s) + 2 S (s)

Q: The heat of combustion of isopropyl alcohol is -2006 kJ/mol. Given the following information,…

A:

Q: the reaction below is -72 kJ. Therefore, ________ kJ of heat are released when 5.0 mol of HBrHBr is…

A: According to balanced equation -72KJ of heat is released when 2 moles of HBr is formed.   It is…

Q: 9. Consider the reaction NH4NO; (s) → NH4+ (aq) + NO3- (aq). When 1.25 g of NH,NO3 dissolves in…

A:

Q: [Reference The overall reaction in a commercial heat pack can be represented as 4 Fe(s) +302(g) → 2…

A: The overall reaction in a commercial heat pack is: 4Fe(s)+3O2(g)→2Fe2O3(s)    , ∆H=-1652 kJ From the…